The Condition Formerly Known as Fatty Liver Disease: What Is MASLD?

By Midrand Medical Centre
The Condition Formerly Known as Fatty Liver Disease: What Is MASLD?


A liver problem can be present for years without causing pain or other obvious symptoms. MASLD is closely connected to metabolic health, which means it often appears alongside conditions such as type 2 diabetes, high blood pressure and abnormal cholesterol levels. The good news is that finding it before advanced scarring develops creates an opportunity to protect both liver and heart health.

What Does MASLD Mean?

MASLD stands for metabolic dysfunction-associated steatotic liver disease and is usually pronounced “maz-uld”. It is the current name for the condition previously called non-alcoholic fatty liver disease, or NAFLD.

The updated name focuses on the metabolic factors driving the condition rather than defining people by alcohol use or using language that may feel stigmatising. MASLD is diagnosed when there is excess fat in the liver together with at least one cardiometabolic risk factor.

Alcohol intake still matters and should be discussed honestly with a healthcare professional. The updated classification includes separate categories when metabolic risk and higher alcohol intake overlap.

MASLD and MASH Are Not the Same Thing

MASLD describes a spectrum of liver changes. Some people have fat accumulation without significant inflammation, while others develop metabolic dysfunction-associated steatohepatitis, or MASH.

MASH means that liver fat is accompanied by inflammation and liver-cell injury. This can lead to fibrosis, which is the formation of scar tissue, and a smaller proportion of people eventually develop cirrhosis, liver failure or liver cancer.

Most people with MASLD do not progress to severe liver disease. The amount of fibrosis is one of the most important predictors of future liver-related problems.

Why Metabolic Health Matters

Risk is higher in people with type 2 diabetes, insulin resistance, excess abdominal weight, high blood pressure, high triglycerides or low HDL cholesterol. Obstructive sleep apnoea and PMOS - the condition previously called PCOS - may also be associated with increased risk.

Genetics, age and family history can influence susceptibility, and MASLD can affect people in a range of body sizes. It should not be treated as a personal failure or judged from someone’s appearance.

The Liver May Stay Quiet

Most people with early MASLD have no symptoms. It may be discovered after a routine blood test or an ultrasound performed for another reason.

When symptoms occur, they may include tiredness or a dull discomfort in the upper-right abdomen. Abdominal swelling, jaundice, itching, easy bruising, confusion or unexplained weight loss are more concerning and may suggest advanced liver disease or another medical problem.

Why MASLD Affects More Than the Liver

MASLD is strongly connected to cardiovascular and metabolic health. Heart attack, stroke and other cardiovascular conditions are major health concerns for people living with it.

Care should therefore address the whole person rather than focusing only on liver enzymes. Blood pressure, cholesterol, blood sugar, sleep, smoking and overall cardiovascular risk all deserve attention.

How Is MASLD Investigated?

A GP may review medical history, medication, alcohol intake, family history and metabolic risk factors before arranging blood tests. Other causes of liver fat or abnormal liver tests - including viral hepatitis, medication effects and certain inherited conditions - may need to be considered.

Normal liver-enzyme results do not completely rule out MASLD or significant fibrosis. An ultrasound can show liver fat but cannot reliably determine how much scarring is present.

A calculation such as the FIB-4 score uses age and routine blood-test results to estimate the likelihood of advanced fibrosis. People with an uncertain or higher result may need transient elastography, other specialist tests or referral to a liver specialist.

A liver biopsy is not required for everyone. It is generally reserved for selected cases where the diagnosis or disease stage remains unclear or where the result would change treatment.

Treatment Starts With Sustainable Changes

There is no need for a crash diet, punishing exercise plan or expensive “liver cleanse”. Treatment focuses on gradual, sustainable improvements and careful management of related medical conditions.

Choose a Supportive Eating Pattern

A Mediterranean-style pattern rich in vegetables, fruit, legumes, whole grains, nuts, seeds, fish and unsaturated fats can support liver and heart health. Sugary drinks, frequent highly processed foods and large amounts of saturated fat are worth reducing without dividing food into rigid “good” and “bad” categories.

A Dietician can help tailor the plan around culture, budget, diabetes, medication and family life. This is especially useful when someone has tried restrictive diets that were difficult to sustain.

Build Regular Movement Into the Week

Both aerobic exercise and resistance training can reduce liver fat and improve metabolic health, even when the number on the scale changes very little. The best activity is one that is safe, realistic and repeatable.

Begin gradually if you are currently inactive or have cardiovascular, joint or breathing problems. A GP can advise whether an assessment is needed before increasing exercise.

Approach Weight Without Shame

For people carrying excess weight, a sustained reduction of around 5–10% can meaningfully improve liver fat and inflammation, while greater reductions may help fibrosis in some cases. Even smaller changes can improve blood pressure, blood sugar and mobility.

Health benefits are not reserved for people who reach a particular clothing size or body mass index. The focus should be improved health and a plan the person can maintain.

Treat Related Conditions

Good control of diabetes, cholesterol and blood pressure is a central part of MASLD care. Statins can generally be used safely in people with MASLD when medically indicated and should not be stopped because of the diagnosis without professional advice.

Specialists may consider evidence-based medicines for selected people with MASH and significant fibrosis. Suitability and availability differ, and these treatments are not replacements for comprehensive metabolic care.

Be Careful With Alcohol and Supplements

Alcohol can add to liver injury, particularly when fibrosis is present. The safest advice depends on the stage of liver disease and the person’s overall health, so discuss individual limits with a clinician.

Herbal and “detox” supplements are not automatically liver-safe. Some can interact with medication or cause liver injury, so bring a complete list of supplements to your appointment.

MASLD is often manageable, especially when it is recognised early and metabolic risks are addressed together.

Please call Midrand Medical Centre on 011 315 2512 to arrange an appointment with one of our GPs or our Dietician for personalised support.

Sources

Location: Gauteng, South Africa

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